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With the increasing popularity of microblogging sites, we are in the era of information explosion. As of June 2011, about 200 million tweets are being generated everyday. Although Twitter provides a list of most popular topics people tweet about known as Trending Topics in real time, it is often hard to understand what these trending topics are about. Therefore, it is important and necessary to classify...
Entity resolution is a problem that arises in many information integration scenarios, which is to resolve the underlying entity that occurs in the data with the same or different surface forms. Besides the attributes information for each entity, there are also link or connection graph among the entities in most of the real world data. In this work, we propose an unsupervised entity resolution algorithm...
A system for efficient team formation in social networks is demonstrated. Given a project whose completion requires a set of skills, our system finds a set of experts that together have all of the required skills and also have the minimal communication cost. The system finds the best teams with or without a leader using two types of communication structures. After discovering the teams of experts,...
We propose a unified approach for imputation of the links and attributes in longitudinal social surveys which accounts for changing network topology and interdependence between the actor's links and attributes. The previous studies on the treatment of non-respondents in longitudinal social networks were mostly concerned with imputation of the missing links only or imputation effects on the networks...
Network motifs refer to recurrent patterns of interconnections which are found to be over-represented in real networks when compared with random ones. Such basic building blocks can well characterize the structure of complex networks. Extending the building blocks to stochastic ones allows for more robust motif detection networks which are stochastic in nature. Network motif analysis, commonly adopted...
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